Kyle and I are working to finish testing all the flip chips in the PDP-12 we can test with the FCT (without using an oscilloscope).

https://youtu.be/JWlRkoDxObQ

#UmfPdp12 #pdp12 #pdp #dec #RetroComputing #VintageComputing #FlipChip

Special bonus: a picture of a double-wide M706 (rev. K) teletype receiver card under test.

#umdpdp12 #RetroComputing #VintageComputing #DEC #pdp #pdp12 #FlipChip

Finally, here's a glam shot of the FCT with an M617 installed. Thanks for joining me on today's project! Special thanks again to @neale and @ckape for the hardware donation, which saved this shoestring project close to $200.

Major thanks to Vince Slyngstad for producing Warren's design, making it RPi-compatible, and making a 3D-printed base -- not to mention selling me this kit pre-assembled -- this is a pretty sweet package and will go a long way towards helping us keep the our PDP-12 up and running for years to come.

If you're interested in learning more about our PDP-12, or donating to the fund supporting this project, please see https://umdpdp12.blogspot.com/ or check out our videos on YouTube: https://www.youtube.com/playlist?list=PLHnc49MScQBBIlVIirpZ1Zjdh91U5Q6-6

#umdpdp12 #RetroComputing #VintageComputing #DEC #pdp #pdp12 #FlipChip

Finally, here's a glam shot of the FCT with an M617 installed. Thanks for joining me on today's project! Special thanks again to @neale and @ckape for the hardware donation, which saved this shoestring project close to $200.

Major thanks to Vince Slyngstad for producing Warren's design, making it RPi-compatible, and making a 3D-printed base -- not to mention selling me this kit pre-assembled -- this is a pretty sweet package and will go a long way towards helping us keep the our PDP-12 up and running for years to come.

If you're interested in learning more about our PDP-12, or donating to the fund supporting this project, please see https://umdpdp12.blogspot.com/ or check out our videos on YouTube: https://www.youtube.com/playlist?list=PLHnc49MScQBBIlVIirpZ1Zjdh91U5Q6-6

#umdpdp12 #RetroComputing #VintageComputing #DEC #pdp #pdp12 #FlipChip

Here's a video of the tester running a "fail stop" test -- testing the chip over and over again, stopping only on a failure.

#umdpdp12 #RetroComputing #VintageComputing #DEC #pdp #pdp12 #FlipChip

It works! Here's a picture of the fully assembled unit, with an M617 in and powered, and a successful test on the screen behind it.

#umdpdp12 #RetroComputing #VintageComputing #DEC #pdp #pdp12 #FlipChip

While @tastytronic is setting up the new more powerful #dec #flipchip tester (in its snazzy #pdp12 livery!), I went to re-watch the videos about the tester that the #umnpdp12 project uploaded to YouTube. The last one ended with a classic fix (CLEAN THE CONTACTS, LADS) while diagnosing the LINCTape, and they didn't even test the cards before making progress: https://youtu.be/aiHSRF_2bmk

I did a bit of digging into #LINCTape and #DECTape over the past couple years, and so here's a #VintageComputing thread with some of the backstory on these tape formats.

Spoiler: The answer is *always* MIT Lincoln Labs.